Your proportion should look something like this

After cross multiplication, you should end up with this equation

After dividing 4 on both sides, you should get that x=9
Im so sorry but i am not into that:(
Answer:
Check pdf
Step-by-step explanation:
1:2
doohiuiojdxgfgygfvgchgfvbg f yfzufxxgjkgxxgjjvx